One Rep Max Calculator
One Rep Max Calculator: Use our professional-grade health tool to calculate complex results accurately and instantly. Fast, secure, and 100% free online ut
One Rep Max (1RM) Calculator
Calculate your estimated 1-rep maximum and percentage breakdowns using the Epley and Brzycki strength models.
Reps
Most accurate between 1-10 reps.
Presets:
ESTIMATED ONE REP MAX (1RM)
113
lbs
Formula Used: Standard Composite (Epley + Brzycki)
Percentage Chart
95% (2 Reps)
107
90% (3-4 Reps)
102
85% (5-6 Reps)
96
80% (7-8 Reps)
90
75% (9-10 Reps)
85
70% (11-12 Reps)
79
65% (13-15 Reps)
73
60% (16-20 Reps)
68
How to Use This Tool in 3 Steps
1
Enter Your Data
Provide the input values, text, or configuration in the interactive workspace above.
2
Real-Time Results
The tool will process your input instantly. You can see the results update as you type.
3
Analyze or Copy
Once satisfied with the result, copy the data or analysis directly from the results panel.
Frequently Asked Questions
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